body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    width: 500px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

textarea {
    width: 100%;
    height: 100px;
    margin-top: 10px;
}

button {
    margin-top: 10px;
    padding: 10px 20px;
    cursor: pointer;
}

pre {
    background: #f0f0f0;
    padding: 10px;
    margin-top: 10px;
    border-radius: 5px;
}